CVE-2022-29855

highpriority · track · 27OT risk · elevatedEPSS 0.008 · 56 %ileEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.79% (56th) EPSS

CVSS 7.2 · high

Is it mine?

24 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

Mitel 6800 and 6900 Series SIP phone devices through 2022-04-27 have "undocumented functionality." A vulnerability in Mitel 6800 Series and 6900 Series SIP phones excluding 6970, versions 5.1 SP8 (5.1.0.8016) and earlier, and 6.0 (6.0.0.368) through 6.1 HF4 (6.1.0.165), could allow a unauthenticated attacker with physical access to the phone to gain root access due to insufficient access control for test functionality during system startup. A successful exploit could allow access to sensitive information and code execution.

cvss

Technical severity, 0–10. One row per scoring source.

7.2

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.2–7.2

v2.07.2highAV:L/AC:L/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 3.9 · impact 10

v3.16.8mediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 0.9 · impact 5.9

v3.16.8mediumAV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.16.2mediumCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-665USCWE-863USCWE-912US

affected products (24)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
Mitel Networks Corp. Mitel 6800 Series SIP Phone≤ 5.1 SP8 (5.1.0.8016)fstec_bduRU
Mitel Networks Corp. Mitel 6800 Series SIP Phone6.0 (6.0.0.368) → 6.1 HF4 (6.1.0.165)fstec_bduRU
Mitel Networks Corp. Mitel 6900 Series IP (MiNet) Phone≤ 1.8.0.12fstec_bduRU
Mitel Networks Corp. Mitel 6900 Series SIP Phone≤ 5.1 SP8 (5.1.0.8016)fstec_bduRU
Mitel Networks Corp. Mitel 6900 Series SIP Phone6.0 (6.0.0.368) → 6.1 HF4 (6.1.0.165)fstec_bduRU
mitel 6865i sip firmware< 5.1.0.8017nvdUScpe:2.3:o:mitel:6865i_sip_firmware:*:*:*:*:*:*:*:*
mitel 6865i sip firmware6.0.0.368 → 6.1.0.171nvdUScpe:2.3:o:mitel:6865i_sip_firmware:*:*:*:*:*:*:*:*
mitel 6867i sip firmware< 5.1.0.8017nvdUScpe:2.3:o:mitel:6867i_sip_firmware:*:*:*:*:*:*:*:*
mitel 6867i sip firmware6.0.0.368 → 6.1.0.171nvdUScpe:2.3:o:mitel:6867i_sip_firmware:*:*:*:*:*:*:*:*
mitel 6869i sip firmware< 5.1.0.8017nvdUScpe:2.3:o:mitel:6869i_sip_firmware:*:*:*:*:*:*:*:*
mitel 6869i sip firmware6.0.0.368 → 6.1.0.171nvdUScpe:2.3:o:mitel:6869i_sip_firmware:*:*:*:*:*:*:*:*
mitel 6873i sip firmware< 5.1.0.8017nvdUScpe:2.3:o:mitel:6873i_sip_firmware:*:*:*:*:*:*:*:*
mitel 6873i sip firmware6.0.0.368 → 6.1.0.171nvdUScpe:2.3:o:mitel:6873i_sip_firmware:*:*:*:*:*:*:*:*
mitel 6905 sip firmware≤ 5.1.0.8016nvdUScpe:2.3:o:mitel:6905_sip_firmware:*:*:*:*:*:*:*:*
mitel 6905 sip firmware6.0.0.368 → 6.1.0.165nvdUScpe:2.3:o:mitel:6905_sip_firmware:*:*:*:*:*:*:*:*
mitel 6910 sip firmware≤ 5.1.0.8016nvdUScpe:2.3:o:mitel:6910_sip_firmware:*:*:*:*:*:*:*:*
mitel 6910 sip firmware6.0.0.368 → 6.1.0.165nvdUScpe:2.3:o:mitel:6910_sip_firmware:*:*:*:*:*:*:*:*
mitel 6920 sip firmware≤ 5.1.0.8016nvdUScpe:2.3:o:mitel:6920_sip_firmware:*:*:*:*:*:*:*:*
mitel 6920 sip firmware6.0.0.368 → 6.1.0.165nvdUScpe:2.3:o:mitel:6920_sip_firmware:*:*:*:*:*:*:*:*

showing 20 of 24

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2022-05-11modified 2026-06-17

references (18)

External citations — patches, advisories, analysis.

scry

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